This is off topic but since it was mentioned:

" 'A National Disgrace'
Half a millennium after Columbus misnamed them, American Indians are the poorest people in the United States.

The country's 2.1 million Indians, about 400,000 of whom live on reservations, have the highest rates of poverty, unemployment and disease of any ethnic group in America. That might surprise Americans who have consumed countless cheery feature stories about Indians making big bucks on casino gambling. Some tribes -- like the Mashantucket Pequots of Connecticut, who own Foxwoods, the country's largest casino -- have indeed gotten very rich. But less than a quarter of America's 557 Indian tribes own casinos, and only 48 tribes earn more than $10 million a year on gaming. Far more typical than Foxwoods is Prairie Wind, the casino on the Pine Ridge reservation -- a gambling hall made of three trailers, located far from any urban market, earning barely $1 million a year for the Oglala Sioux."

http://www.emayzine.com/lectures/indian.htm


-snip-
Although this was Washington Post article was written in Feb 1997, I doubt if things has changed that much in 10 years...